JPS5674324A - Molding method of pipe material and its device - Google Patents

Molding method of pipe material and its device

Info

Publication number
JPS5674324A
JPS5674324A JP15052579A JP15052579A JPS5674324A JP S5674324 A JPS5674324 A JP S5674324A JP 15052579 A JP15052579 A JP 15052579A JP 15052579 A JP15052579 A JP 15052579A JP S5674324 A JPS5674324 A JP S5674324A
Authority
JP
Japan
Prior art keywords
pipe material
concave
shape
concave groove
electrode
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP15052579A
Other languages
Japanese (ja)
Other versions
JPS638875B2 (en
Inventor
Takashi Furuta
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KYB Corp
Original Assignee
Kayaba Industry Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kayaba Industry Co Ltd filed Critical Kayaba Industry Co Ltd
Priority to JP15052579A priority Critical patent/JPS5674324A/en
Publication of JPS5674324A publication Critical patent/JPS5674324A/en
Publication of JPS638875B2 publication Critical patent/JPS638875B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Forging (AREA)

Abstract

PURPOSE: To press a pipe material while heating the same by supplying the power to electrodes and form a sharp concave groove having no burn flaws on the outside surface of the pipe by grasping the wall of the pipe material between the concave- inner electrode and the outer electrode of a convex shape conforming to the concave shape.
CONSTITUTION: An inner electrode 3 having a single concave part 12 corresponded to the concave groove shape to be formed on a pipe material 2 at the inserting part 11 of a semicircular section conformed to the inside shape of the pipe material 7 is inserted onto the pipe material 7. Next, an outer electrode 2 provided with a convex part 9 conformed to the concave groove shape to be formed is opposedly disposed. Thence, when the power is supplied to the electrode 2 while it is being pressed under predetermined pressure, the pipe material 7 deforms between the convex part 9 and the concave part 12, whereby the concave groove conforming to the concave part is formed. Equally good results are also obtained even by providing plural concave parts 16A, 16B on the circumferential surface of the insertion part 15 of a circular section smaller than the inside diameter of the pipe material 7 and successively rotatively using the pressure receiving surface of the inner electrode 3B having a cooling water passage 17 in the inside.
COPYRIGHT: (C)1981,JPO&Japio
JP15052579A 1979-11-20 1979-11-20 Molding method of pipe material and its device Granted JPS5674324A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15052579A JPS5674324A (en) 1979-11-20 1979-11-20 Molding method of pipe material and its device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15052579A JPS5674324A (en) 1979-11-20 1979-11-20 Molding method of pipe material and its device

Publications (2)

Publication Number Publication Date
JPS5674324A true JPS5674324A (en) 1981-06-19
JPS638875B2 JPS638875B2 (en) 1988-02-24

Family

ID=15498763

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15052579A Granted JPS5674324A (en) 1979-11-20 1979-11-20 Molding method of pipe material and its device

Country Status (1)

Country Link
JP (1) JPS5674324A (en)

Also Published As

Publication number Publication date
JPS638875B2 (en) 1988-02-24

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